Tektronix 53/54D 2 MHz High-Gain Differential Amplifier (1969)

Orig CostLow BidHigh Bidaverage
$185 (1969) ...
$9.95 6/30/05 #7527698877 sams995 (1 bid) (untested-all tubes intact, clean)
$10.00 3/29/06 #7603033571 chemdork (1 bid) (with original manual)
$16.05 (+~$15) 2/3/08 #120215052050 sir_dan (3 bids $9.99 start) (w/ tubes-untested)

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    This is a "High Gain" (1mV/cm) differential input amp.

    DC-to-2MHz differential

    Type 53/54D High-gain Differential Calibrated DC Preamp plug-in module for 1960-1972 production Tektronix oscilloscopes in the 530, 540, and 550 series. 1 MV - 50 V/CM.1 Meg./47 uuF inputs